Component Inspections - Suzuki DF150 Service Manual

COMPONENT INSPECTIONS

HIGH PRESSURE FUEL PUMP 6 SEC OPERATING SOUND
1. Install the emergency stop switch lock plate in position.
2. Shift into Neutral.
3. Turn ignition switch ON and check for fuel pump operating
sound.
Fuel pump operating sound:
Sounds for approx. 6 seconds only
NOTE:
Fuel pump operating sound is low because pump is inside fuel
vapor separator. If you cannot hear pump sound clearly, use a
sound scope or long blade screw driver.
FUEL INJECTOR OPERATING SOUND (CRANKING)
1. Disconnect all ignition coil connectors.
2. Touch a sound scope or long blade screw driver to fuel injec-
tor body as shown.
3. Crank engine and check for injector operating sound.
Injector operating sound: "Click"
FUEL INJECTOR OPERATING SOUND (INDIVIDUAL)
1. Disconnect fuel injector wire and connect test cord.
! 09930-89260: Injector test cord A
2. Connect Gray wire to body ground.
3. Momentarily touch Black/Yellow wire to starter motor mag-
netic switch "B" terminal (connected to battery positive +
terminal) and check for injector operating sound.
Injector operating sound: "Click"
#
Connecting fuel injector to battery positive for more
than a few seconds may cause injector overheating
and possible injector solenoid failure.
ENGINE CONTROL SYSTEM
1
1. Fuel vapor separator/
High pressure fuel pump
Injector body
Click
1
1. Magnetic switch "B" terminal
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